They need to be on for twenty minutes or so in water before you will see the light.
Tetra whisper heater 2 15.
Just submerge heater in the aquarium and plug it into an outlet.
I m going to aqueon for the lifetime warranty.
Designed for 2 to 15 gal tanks the tetra heater 5 15 provides a steady 78 degree water temperature automatically.
Item 2 tetra submersible aquarium tank whisper heater 2 15 gallon 50 watt nib 2 tetra submersible aquarium tank whisper heater 2 15 gallon 50 watt nib 30 00 free shipping.
The heaters have electronic thermostats that automatically adjust heat output to keep water at a constant 78 degrees f.
4 0 out of 5 stars tetra submersible water heater.
Isn t doing wonders for me it s the heater where it s preset to supposedly be 78 2 plus or minus two after being unsatisfactory and only being around 76.
This fish tank heater includes a built in thermostat that causes it to turn on.
All ht heaters have indicator lights to let you know when the heater is on heating the aquarium.
Buy a lifetime warranty heater if you want it to last.
There s a reason these have a 2 year warranty.
I have that heater it is not that great but will work for a 5g if the room gets cold the 10g is too much water for it.
Tetra s ht line of heaters are easy to use and work in aquariums ranging from 2 to 55 gallons.
Hi so i ve had the tetra 2 15 heater since i set up the new 5gal tank.
This is perfect for any nano.
There is no thermostat to set so there s no hassle about temperature control.
I d return it if it wasn t too late.
Ideal water temperature for goldfish.
Almost the same price.
Just submerge the heater in the water attach it to the side of the aquarium with the convenient suction cups and let it get to work heating the water.
68 72 f ideal water temperature for tropical fish.
A heater is an essential piece of equipment because fish rely on the temperature of the water for their body heat.